Copying materials

Details Copying materials Copying materials

G - Physics

03

F

96/157, 96/200,

G03F 7/022 (2006.01)

Patent

CA 1254788

Abstract of the Disclosure A light-sensitive composition for the preparation of printing plates is described, which contains a water-insoluble binder which is soluble in aqueous-alkaline solutions; a light-sensitive o- or p- quinone diazide, a diazonium salt polycondensation product or a mixture of a) a compound which eliminates an acid on exposure to light and b) a compound having at least one C-0-C group which can be split by acid; and a thermo-crosslinking compound which is a cyclical acid amide of the general formula: Image wherein R denotes a hydrogen atom or an alkyl group. The printing plates can be baked at lower temperatures than plates without a crosslinking agent, but nevertheless have a long shelf life.

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